Mand mullee-jacobs



UNITED STATES PATENT FFIGE.

JOSEPH SACHS AND ARMAND MULLER-JACOBS, OF NEW YORK, N. Y.

MINERAL COLOR.

SPECIFICATION forming part of Letters Patent N0. 512,225, dated January 2, 1894.

' Application filed March 8, 1893. SerialNo. 465,206. (No specimens.)

To all whom it may concern:

Be it known that we, JOSEPH SACHS, a subject of the Grand Duke of Baden, and AR- MAND MfiLLERJACOBS, a citizen of the Republic of Switzerland, residing in New York,

in the county of New York and State of New York, have invented certain new and useful Improvements in Mineral Colors; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to mineral colors for decorative purposes and its novelty consists in the several successive steps of the'process employed in their manufacture.

We have already described and claimed in an application forLettersPatent of the United States filed August 9, 1892, Serial No. 442,603, a process for treating mineral substances which consists in first subjecting them to the action of an animalizing mordant such as albumen which is coagulated by a suitable reagent and then treating them thereafter with an organic dye in solution, and, in that application we limited ourselves to the process consisting of the steps therein described and claimed, as required by the rulesof the Patent Office. We shall, in our present application, confine ourselves to the process wherein the mineral is subjected to the action of an organic dye in solution before or simultaneously with its treatment with an animalizing mordant.

In carrying out our invention a mineral, preferably of a micaceous nature, such as muscovite, phlogopite or lepidolite is first reduced to a finely divided state by any suitable means. It is then introduced into a solution of an organic color of the desired strength. We have found in practice that aqueous solutions are usually the best on account of their cheapness and the ease with which they can be made. Into this solution is then introduced, slightly in excess of the amount necessary to fix the color,a quantity of albumen, and the mixture is vigorously stirred to bring the particles of the mineral into thorough contact with the coloring matter. After this has been accomplished the mixture is allowed to settle and is then filtered by any suitable means. The filtrate may be drawn off and may be used for the treatment of other masses of the finely divided mineral with or without the addition of more of the dye. The precipitated and ground mica is thoroughly dried in a suitable vessel and when dried is introduced into asteam bath. This is preferably accomplished by placing it in a suitable closed vessel capable of agitation and provided with means for introducing and expelling steam under pressure. The steam should be kept at a pressure of from one and a half to two atmospheres, and should be continued until the coagulation of the albumen is complete, which usually takes about half an hour. The coagulation of the albumen may likewise be accomplished by the use of any suitable reagent such as acetic acid, phenol or the like, but steam or hot water is cheaper, simpler and more efficient and we prefer it for that reason. After this treatment the mineral is dried.

As we have explained in the application for Letters Patent above referred to, the action of the process described, is to animalize the mineral and make it receptive to colors in a manner which has before our discovery been unknown and as a result the mineral is dyed thoroughly and efficiently.

Having described our invention, what we claim as new isv 1. The process of treating mineral substances which consist in subjecting the same in a finely divided state simultaneously to the action of an animalizing mordant and a solution of an organic dye.

2. The process of treating mineral subdried mineral to the action of steam under pressure.

In testimony whereof we have signed this specification in the presence of two subscrib- I5 ing witnesses.

JOSEPH SACHS. ARMAND MULLER-JACOBS.

Witnesses:

RUDOLPH SOHULDER, RICHARD SCHULDER.

L. s. [n s.] 

